Regular non-Skyrim porn. Actual porn in Skyrim is okay, as long as you put the effort into making it look nice or artsy.

TIPS:

If possible, try to hide your UI before taking your screencap, unless the UI is important to show a detail or context. You can do this by going to Settings>Display and turning the UI opacity down, or typing "tm" into the console.

Re-hosting images on imgur or minus is strongly encouraged. Steam's servers work okay, but imgur and minus have added convenience and functionality such as in-line image viewing with RES.

If for some reason your post contains a spoiler, use the tag:

[ SPOILER HERE ]( / spoiler)

NOTE If you don't allow this subreddit to show you custom layouts and styles, the spoiler tag won't prevent you from seeing spoilers. You've been warned.